Applicants for a Particular Job,which Involves Extensive Travel in Spanish-Speaking

question 19

Multiple Choice

Applicants for a particular job,which involves extensive travel in Spanish-speaking countries,must take a proficiency test in Spanish.The sample data were obtained in a study of the relationship between the numbers of years applicants have studied Spanish and their score on the test.Use the regression analysis and summary statistics given below to find a 95% confidence interval for the average score of an applicant who has studied Spanish for 2.2 years. $$\begin{array} { l l l l c } \text { Variable } & \text { Count } & \text { Mean } & \text { StdDev } & \text { Range } \\\text { Years } & 10 & 3.5 & 0.341565 & 3 \\\text { Score } & 10 & 69.7 & 4.088058 & 41\end{array}$$ Dependent variable is: Score R-squared = 83.0%
S = 5.65138 with 10 - 2 = 8 degrees of freedom $$\begin{array} { l l l l l } \text { Variable } & \text { Coefficient } & \text { SE(Coeff) } & \text { t-ratio } & \text { P-value } \\\text { Constant } & 31.53333 & 6.360418 & 4.957745 & 0.00111 \\\text { Number of years } & 10.90476 & 1.744054 & 6.252538 & 0.000245\end{array}$$

• A)51.5 to 59.5
• B)43.1 to 70.9
• C)43.7 to 67.3
• D)48.9 to 62.2
• E)40.9 to 70.2

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Definitions:

Parasympathetic Nervous System

A component of the autonomic nervous system that plays a crucial role in energy conservation and reducing the heart rate, among various other tasks.

Somatic

Pertaining to the body, particularly as distinct from the mind or psyche, often used in the context of bodily symptoms or sensations.

Sympathetic

Part of the autonomic nervous system involved in the body's fight or flight response, preparing the body for rapid action in response to a threat.

Sympathetic Nervous System

A part of the autonomic nervous system that activates the 'fight or flight' response, increasing heart rate, dilating pupils, and preparing the body for action.